@misc{indiciaebd355a90bfee,
  title = {The preparation of illustrations for reports of the United States Geological survey : with brief descriptions of processes of reproduction},
  author = {John L. Ridgway},
  year = {1920},
  doi = {10.3133/70047685},
  url = {https://pubs.usgs.gov/publication/70047685},
  note = {Source identifier: 70047685}
}